[Intensity modulated radiation therapy for 49 patients with recurrent nasopharyngeal carcinoma].

Objective: To evaluate the feasibility, toxicity and tumor control of intensity modulated radiation therapy (IMRT) for recurrent nasopharyngeal carcinoma.

Methods: Fourty-nine patients (Karnofsky performance status (KPS) >or= 80) with local-regional recurrence in the nasopharynx were treated with full course IMRT. Three patients with cervical lymph node metastasis (N1 2 and N3 1) were further supplemented with 5 to 6 courses of chemotherapy (Cisplatin + 5-Fu) after IMRT.

[Analysis of prognostic factors for 63 patients with brain metastasis from lung cancer after radiochemotherapy].

Background & Objective: Brain metastasis is often found in the patients with lung cancer. Radiotherapy is regular and effective method, and it aims at palliating symptoms and prolonging survival time. However, now there are different viewpoints on protocols of radiotherapy and prognostic factors.

High-dose iodized oil transcatheter arterial chemoembolization for patients with large hepatocellular carcinoma.

Aim: To conduct a randomized trial to evaluate the role of using high-dose iodized oil transcatheter arterial chemoembolization (TACE) in the treatment of large hepatocellular carcinoma (HCC).

Methods: From January 1993 to June 1998, 473 patients with unresectable hepatocellular carcinoma were divided into two groups: 216 patients in group A received more than 20 mL iodized oil during the first TACE treatment; 257 patients in group B received 5-15 mL iodized oil in the same way. The Child's classification and ICG-R15 for evaluating the liver function of the patients were done before the treatment.

CT arterial portography and CT hepatic arteriography in detection of micro liver cancer.

AIM:To recognize the characteristic findings of micro-liver cancer (MLC) and to evaluate the effect of CT arterial portography (CTAP) and CT hepatic arteriography (CTHA) in diagnosis of MLC.METHODS:Between April 1996 to December 1998, CTAP and CTHA were performed in 12 patients with MLC, which were not detected by conventional CT examinations. After CTHA, 3mL-5mL mixture of lipiodol, doxorubicin and mitoycin C were injected into hepatic artery through the catheter, and the followed up by CT three or four weeks later (Lipiodol CT Lp-CT).

Findings of non-pathologic perfusion defects by CT arterial portography and non-pathologic enhancement of CT hepatic arteriography.

AIM:To recognize the characteristic findings of non-pathologic perfusion defects with CT arterial portography (CTAP) and nonpathologic enhancement found in CT hepatic arteriography (CTHA).METHONDS:The manifestations of nonpathologic perfusion defects with CTAP and non pathologic enhancement found in CTHA were analyzed in 50 patients with primary hepatocellular carcinoma.RESULTS:The false-positive rate of perfusion defects detected in CTAP was 15.